If an engine lubricating oil's viscosity is given as SAE 20W as compared to SAE 20, what is the significant difference between the two lubricating oils?

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Accepted Answer

The SAE 20W oil is primarily intended for low ambient temperature service, and the SAE 20 oil is primarily intended for high ambient temperature service.

Answer

The SAE 20W oil is primarily designed for year-round (low and high ambient temperature service) and SAE 20 oil is primarily intended for high ambient temperature service.

Answer

The SAE 20W oil is primarily intended for high ambient temperature service, and the SAE 20 oil is primarily intended for low ambient temperature service.

Answer

The SAE 20W oil is primarily designed for year-round (low and high ambient temperature service) and SAE 20 oil is primarily intended for low ambient temperature service.

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